Diaa Osman, DO
NPI 1689894495 · Hematology & Oncology Physician · Austin, TX
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Diaa Osman, DO is a Hematology & Oncology Physician provider in Austin, TX (NPI 1689894495).
Provider details
- NPI number
- 1689894495
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- No
- License
- 63605 (MN)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
6,165 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 932 | $9 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 678 | $8 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 613 | $10 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 581 | $127 |
| Gammaglobulin (immune System Protein) Measurement82784 | 465 | $9 |
| Flow Cytometry Technique for Dna Or Cell Analysis, Each Additional Marker88185 | 420 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 32 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Anastrozole | 80 | 21 |
| Dexamethasone | 67 | 28 |
| Apixabanbrand: Eliquis | 54 | 17 |
| Prednisone | 50 | 13 |
| Hydroxyurea | 49 | — |
| Rivaroxabanbrand: Xarelto | 47 | — |
| Ondansetronbrand: Ondansetron Odt | 42 | 28 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$385 across 9 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-04-26
- Last updated
- 2022-08-30
- Certified
- 2022-08-30
Frequently asked questions
- What is Diaa Osman's NPI number?
- Diaa Osman's National Provider Identifier (NPI) is 1689894495, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Diaa Osman's specialty?
- Diaa Osman is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Diaa Osman located?
- Diaa Osman's practice location on file with NPPES is 4101 James Casey St Ste 100, Austin, TX 78745-1145.
- What is Diaa Osman's phone number?
- The practice phone number listed in the NPPES registry for Diaa Osman is (512) 447-2202.
- Does Diaa Osman accept Medicare?
- Diaa Osman is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Diaa Osman's NPI active?
- Yes — Diaa Osman's NPI (1689894495) is active in the NPPES registry as of the last update on 2022-08-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.